CN106291753B - A kind of Special testing device of half aviation Transient Electromagnetic Receiver - Google Patents
A kind of Special testing device of half aviation Transient Electromagnetic Receiver Download PDFInfo
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- CN106291753B CN106291753B CN201610718645.8A CN201610718645A CN106291753B CN 106291753 B CN106291753 B CN 106291753B CN 201610718645 A CN201610718645 A CN 201610718645A CN 106291753 B CN106291753 B CN 106291753B
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- signal
- transient electromagnetic
- host computer
- sram
- nios
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V13/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices covered by groups G01V1/00 – G01V11/00
Abstract
The invention discloses a kind of Special testing devices of half aviation Transient Electromagnetic Receiver, including host computer, signal generator module, external memory, signal storage, signal output module, wherein signal generator module includes Nios systems, SRAM control unit, phase accumulator and phaselocked loop (PLL)；Nios systems are a kind of programmable system on chip (SOPC).When use, input noise type and waveform parameter in host computer operation interface, and it is transferred to signal generator module, signal generator module generates Wave data according to the parameter information received and stores into signal storage, phase accumulator reads Wave data and is transmitted to signal output module, to generate the transient electromagnetic signal for being superimposed various noises, Transient Electromagnetic Receiver will be transferred to after the waveform simple process received on host computer, the waveform of waveform and the receiver output generated to signal generator by host computer is analyzed, to judge whether the design of receiver meets design requirement.
Description
Technical field
The present invention relates to a kind of Special testing devices of half aviation Transient Electromagnetic Receiver, can be generated more particularly to a kind of
The waveform signal of half aviation Transient Electromagnetic Receiver and the half aviation transient electromagnetic reception that analysis comparison can be carried out to waveform signal
The Special testing device of machine.
Background technology
With the continuous development of electronic technology and computer technology, electromagnetic method instrument, accuracy of observation, anti-interference ability and
Noise inhibiting ability etc. is greatly improved.Electromagnetic method receiving instrument and the earth constitute the response summation of pumping signal
Electromagnetic method receives the total measurement result of system, and could only reflect the electrical letter of underground structure to the response of pumping signal greatly
Breath, it is true greatly to the electromagnetic response of pumping signal in order to obtain, it is necessary to eliminate what instrument itself was brought to measurement result
It influences.Therefore, the test and calibration of instrument are the important rings before field work.
Capital equipment of the signal source as instrument test is mainly used for generating the performance of ideal signal test equipment, at present
General signal generator cannot be satisfied the test needs of Transient Electromagnetic Receiver, be in particular in the following aspects：
(1) Transient Electromagnetic Receiver requires to work in the method for synchronization and transient electromagnetic signal is similar to e index signal, market
Though upper existing signal source can generate e index signal by software kit, (the IntuiLink random waveforms of such as Keysight are soft
Part, Tyke ArbExpressTM softwares etc.), but adjusting parameter is complex, after needing host computer to change parameter again under
It carries, it is inconvenient to use；
(2) it can not simulate and generate unmanned plane electromagnetic interference noise and coil movement noise, but both noises are half aviations
The peculiar noise of transient electromagnetic system influences the quality of Transient electromagnetic response signal very big；
(3) lack integrated signal to occur and signal comparing function.Equipment under test acquires the reason that existing signal source generates
After thinking waveform, measured waveform and ideal waveform can not be compared and analyzed in time, thus the performance of equipment under test can not be verified
Whether index meets the requirements.
Therefore half aviation transient electromagnetic Special testing device is developed to be of great significance for the test of receiver.
Invention content
The purpose of the present invention is to provide a kind of Special testing device of half aviation Transient Electromagnetic Receiver, the test devices
The transient electromagnetic for generating the main noise being superimposed including unmanned plane electromagnetic interference noise and coil movement noise can be simulated
Signal, and analysis comparison can be carried out with original transient electromagnetic signal to actual measurement transient electromagnetic signal.
In order to achieve the above objectives, the present invention uses field programmable gate array (FPGA) and programmable system on chip (SOPC)
Technology realizes waveform signal generation device, it include host computer, signal generator module, external memory, signal storage and
Signal output module, the signal generator module include Nios systems, SRAM control unit and phase accumulator, wherein Nios systems
System is programmable system on chip (SOPC), including the soft cores of Nios, serial ports controller, SRAM controller and universal I/O port, it is described on
Position machine is for selecting noise type and input waveform parameter, host computer to be connect with Nios system communications by serial ports controller, institute
It states Nios systems to handle the waveform parameter received to generate corresponding Wave data by the soft cores of Nios, and passes through
SRAM controller stores Wave data to signal storage so that phase accumulator is read；The SRAM control unit according to
The read-write control signal of SRAM controller output switches the control of phase accumulator and SRAM controller to signal storage；Institute
Universal I/O port is stated according to the phase parameter obtained from host computer by serial ports controller, adjusts the phase-accumulated of phase accumulator
Value；The phase accumulator is read according to the address date of the variation output signal memory of phase from signal storage
The transient electromagnetic signal data of superimposed noise sends signal output module, while output sync pulse signal to；The signal is defeated
Going out module, output to the tested transient electromagnetic after D/A conversions, amplification and filtering receives by the transient electromagnetic signal data received
Machine, then by radioing to host computer after tested Transient Electromagnetic Receiver processing, host computer carry out time frequency analysis to signal, and with
The transient electromagnetic signal that Special testing device generates is compared.
Further, the host computer is PC machine.
Further, the SRAM controller realizes signal storage store function using Custom component.
When using test device of the present invention, user can select in host computer signal analysis comparison software control interface
The parameters such as the noise type of the addition and amplitude of input signal, frequency and attenuation coefficient, then signal analysis comparison software is to this
A little parameters carry out being packaged processing and are sent to signal generator module according to agreement；Parameter of the soft cores of Nios set by host computer
Change the parameter in original signal model, to generate corresponding transient electromagnetic Wave data, and store into signal storage,
Phase accumulator, which reads data from signal storage and sends signal output module to, generates waveform；In tested object -- wink
The data of the data acquisition module output become in electro-magnetic receiver are transferred to host computer after simple process by wireless routing, by upper
The signal analysis comparison software that position machine carries carries out the actual signal of standard signal and receiver reception that test device generates
Time frequency analysis, and the design parameter of receiver is constantly adjusted until meeting design objective requirement according to test result.
The invention has the advantages that：
(1) the SOPC systems based on Nios that the present invention uses can make to be easy to generate e index deamplification on single-chip
With change attenuation coefficient, use is very easy；
(2) other than the micropulsation that can simulate traditional Gaussian noise, earth's magnetic field etc., also according to half aviation transient electromagnetic
Demand is originally added to unmanned plane electromagnetic interference noise and coil movement noise, makes it closer to true environment, has
Stronger flexibility and versatility；
(3) while having the function of signal generation and signal comparing function, it can be in time to actual measurement transient electromagnetic signal and test
The standard signal that device generates compares and analyzes, and whether the performance indicator so as to verify equipment under test in time meets the requirements.
Description of the drawings
Fig. 1 is the structure diagram of the present invention.
Fig. 2 is the transient electromagnetic signal graph for being superimposed unmanned plane electromagnetic interference noise that the present invention exports.
In figure：1-4-Transient Electromagnetic Receiver of host computer 2-signal generator module, 3-signal output module 5-
6-Nios of Nios systems soft 7-SRAM controller of core 8-Memory Controller, 9-serial ports controller, 10-universal I/O ports
11-EPCS controller 12-SRAM control unit, 13-phase accumulator, 14-phaselocked loop (PLL) 15-external memories
16-outside FLASH 17-crystal oscillator, 18-signal storage, 19-synchronizing signal, 20-data acquisition modules of output module
21-data transmission modules
Specific implementation mode
For a better understanding of the present invention, with reference to specific embodiment, the invention will be further described, but the present invention
Protection domain it is without being limited thereto.
Embodiment
Test device of the present invention is to be based on field programmable gate array (FPGA) and programmable system on chip (SOPC) technology
Design, the object tested is Transient Electromagnetic Receiver 4.
As shown in Figure 1, test device of the present invention includes host computer 1, signal generator module 2, signal output module 3, outside
Memory 15, outside FLASH 16, crystal oscillator 17, signal storage 18 and synchronizing signal output module 19, the host computer 1 use
General PC machine, PC machine is interior to analyze comparison software equipped with signal, and noise type can be selected in the operation interface of host computer 1
With setting waveform parameter (amplitude, attenuation coefficient), and can to 4 collected transient electromagnetic signal of Transient Electromagnetic Receiver with survey
The transient electromagnetic signal that transmission is set in trial assembly is compared and analyzes, and real-time storage and generation report, and user can be as needed
Noise type and adjustment waveform parameter are selected, to generate required transient electromagnetic signal.Each function module in operation interface is logical
LabVIEW programmings are crossed to realize.
The signal generator module 2 uses programmable system on chip (SOPC) technology, passes through field programmable gate array
(FPGA) it realizes, as shown in Figure 1, signal generator module 2 includes Nios systems 5, SRAM control unit 12,13 and of phase accumulator
Phaselocked loop (PLL) 14, signal generator module 2 by using Atera companies IV family chip EP4CE10F17 of Cyclone and
The connection of phase accumulator 13 and SRAM control unit 12 is realized in Verilog Programming with Pascal Language.The Nios systems 5 are to call
What altera corp provided cuts, may be programmed the soft cores of Nios, addition serial ports controller 9, universal I/O port 10, customized SRAM
Controller 7, Memory Controller 8 and EPCS controllers 11 generate.Host computer 1 is communicated by serial ports controller 9 and Nios systems 5
Connection.Phaselocked loop (PLL) 14 is used to generate the clock signal of each module in signal generator module 2 and signal output module 3
Clock signal.
Peripheral components include external memory 15, outside FLASH 16, crystal oscillator 17 and signal storage 18, external memory
15 use the synchronous DRAM (SDRAM) of model K4M561633G, are mainly used as the interior of the operation of Nios systems 5
It deposits.The static random of model IS61WV25616BLL-10TL is used as the signal storage 18 of Wave data storage unit
Access memory (SRAM).Crystal oscillator 17 is matched with phaselocked loop (PLL) 14, to provide the clock frequency needed for device.
In use, noise type and waveform parameter that Nios systems 5 are transmitted according to host computer 1 first through the soft cores of Nios 6 more
Change the parameter of internal waveform formula, generates Wave data needed for transient electromagnetic signal in real time；Control letter is write when SRAM controller 7
When number effective, SRAM control unit 12 gives the control of signal storage to SRAM controller 7, and Nios systems 5 are by wave at this time
Graphic data is written in signal storage 18, and the address of signal storage 18 and Wave data constitute a look-up table, pass through inquiry
The Wave data that address can be needed；When the read control signal of SRAM controller 7 is effective, SRAM control unit 12 is by signal
The control of memory 18 gives phase accumulator 13, and it is tired that phase accumulator 13 obtains phase according to the parameter of universal I/O port 10
The frequency control word of device 13, phase accumulator 13 is added to be added frequency control word with accumulated value before to obtain new accumulated value,
And address of the value output after address decoding as signal storage 18 is accumulated it, while being read from signal storage 18
The e index deamplification data for being superimposed various noises give signal output module 3, and phase accumulator 13 constantly adds up, and pass through
As soon as being circulated back to initial phase, signal generator module 2 exports the data of a complete cycle.
The signal output module 3 is made of D/A converter and operational amplifier, the number that signal generator module 2 generates
Transient electromagnetic signal is after D/A converter is converted into analog signal, then the low-pass filter through operational amplifier THS4217 compositions
Output, the transient electromagnetic signal of output is the transient electromagnetic signal (as shown in Figure 2) for being superimposed various noises.
The Transient Electromagnetic Receiver 4 includes data acquisition module 20 and data transmission module 21, data acquisition module 20
According to synchronizing signal output module 19 export synchronizing signal come control acquisition signal output module 3 export be superimposed various make an uproar
The e index deamplification of sound.Data transmission module 21 is made of wireless routing, completes the data for acquiring data acquisition module 20
It being transferred on host computer 1, the waveform of waveform and the receiver output generated to signal generator by host computer 1 is analyzed, from
And judge whether the design of Transient Electromagnetic Receiver 4 meets design requirement.
The above is only the preferable embodiment of the present invention, but scope of protection of the present invention is not limited thereto, any
The improvement and replacement carried out based on the solution of the present invention and design should all be covered within the scope of the present invention.
Claims (3)
1. a kind of Special testing device of half aviation Transient Electromagnetic Receiver, it is characterised in that：Mould is generated including host computer, signal
Block, external memory, signal storage and signal output module, the signal generator module include Nios systems, SRAM controls
Module and phase accumulator, wherein Nios systems are programmable system on chip, including the soft cores of Nios, serial ports controller, SRAM control
Device and universal I/O port processed, input of the host computer for the selection and waveform parameter of noise type, host computer pass through serial ports control
Device processed is connect with Nios system communications, the Nios systems by the soft cores of Nios by the noise type received and waveform parameter into
Row processing is stored Wave data to signal storage by SRAM controller with generating corresponding Wave data；It is described
The read-write control signal that SRAM control unit is exported according to SRAM controller come switch phase accumulator and SRAM controller to letter
The control of number memory；For the universal I/O port according to the phase parameter obtained from host computer, the phase for adjusting phase accumulator is tired
It is value added；The phase accumulator is read according to the address date of the variation output signal memory of phase from signal storage
The transient electromagnetic signal data of superimposed noise is taken to send signal output module, while output sync pulse signal to；The signal
The transient electromagnetic signal data received is output to tested transient electromagnetic after D/A conversions, amplification and filtering and connect by output module
Receipts machine, then by radioing to host computer after tested Transient Electromagnetic Receiver processing, host computer believes the transient electromagnetic received
Number carry out time frequency analysis, and with Special testing device generate transient electromagnetic signal compared；
When the write control signal of the SRAM controller is effective, the SRAM control unit hands over the control of signal storage
To the SRAM controller, Wave data is written in the signal storage Nios systems at this time, the signal storage
The address of device and Wave data constitute a look-up table, the Wave data that can be needed by inquiring address；As the SRAM
When the read control signal of controller is effective, the SRAM control unit gives the control of the signal storage to the phase
Accumulator, the phase accumulator obtain the frequency control word of the phase accumulator according to the parameter of the universal I/O port,
Frequency control word is added to obtain with accumulated value before new accumulated value by the phase accumulator, and by the phase accumulator
Accumulated value export address after address decoding as the signal storage, while being read from the signal storage
The e index deamplification data for being superimposed various noises give the signal output module, and the phase accumulator constantly adds up,
As soon as being circulated back to initial phase by, the signal generator module exports the data of a complete cycle.
2. the Special testing device of half aviation Transient Electromagnetic Receiver according to claim 1, it is characterised in that：On described
Position machine is PC machine.
3. the Special testing device of half aviation Transient Electromagnetic Receiver according to claim 1, it is characterised in that：It is described
SRAM controller realizes signal storage store function using Custom component.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610718645.8A CN106291753B (en) | 2016-08-24 | 2016-08-24 | A kind of Special testing device of half aviation Transient Electromagnetic Receiver |
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| CN201610718645.8A CN106291753B (en) | 2016-08-24 | 2016-08-24 | A kind of Special testing device of half aviation Transient Electromagnetic Receiver |
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| CN106291753B true CN106291753B (en) | 2018-10-30 |
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| CN110823962B (en) * | 2019-11-14 | 2020-11-06 | 山东大学 | Three-dimensional imaging method and system for landslide mass |
| CN111859647B (en) * | 2020-07-09 | 2021-08-31 | 广西交通设计集团有限公司 | Design method for semi-aviation transient electromagnetic observation region |
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Non-Patent Citations (4)
| Title |
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| Implementation of embedded controller using SOPC technology;Lin K H，et al.;《IEEE》;20061231;第1-6页 * |
| Mapping coastal aquifers by joint inversion of DC and TEM Soundings-three case histories;albouy Y ,et al.;《Groundwater》;20011231;第87-97页 * |
| 基于NIOS的SOPC设计;方茁，等;《计算机工程与设计》;20040430;第504-507页 * |
| 瞬变电磁专用信号源的研制;王鼎鸿;《中国优秀硕士学位论文全文数据库 基础科学辑》;20160415;第20、23-36、45页 * |
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